CVE-2026-57281 Jenkins Script Security Plugin has a script security bypass vulnerability
Attackers with sandboxed Groovy script execution rights can bypass the sandbox and execute arbitrary code on the Jenkins server.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2026-57281?
CVE-2026-57281 is a high-severity code injection vulnerability in Jenkins Script Security Plugin, published on 24 Jun 2026. Any signed-in user can exploit it over the network, with no action from the victim.
Official description
Jenkins Script Security Plugin 1402.v94c9ce464861 and earlier does not reject Groovy AST transformation annotations carrying an extensions member, allowing attackers able to run sandboxed Groovy scripts to execute code outside the sandbox if a suitable script is present on the classpath of the component that evaluates the script.
Which versions are affected by CVE-2026-57281?
2 open source packages ship an affected version, including org.jenkins-ci.plugins:script-security. It affects 1 product.
| Package | Affected | Fixed in |
|---|---|---|
org.jenkins-ci.plugins:script-security Maven | All versions | 1402.1405.vc96e74964250 |
org.jenkins-ci.plugins:script-security Maven | All versions | 1402.1405.vc96e74964250 |
Products include Jenkins Script Security.
How do I fix CVE-2026-57281?
Upgrade org.jenkins-ci.plugins:script-security to 1402.1405.vc96e74964250 or later.
Upgrade, and never evaluate templates, expressions or code built from user input. More about Code injection.
Is CVE-2026-57281 being exploited?
There is no known exploitation of CVE-2026-57281 in the wild and no public exploit code.
Other vulnerabilities in Jenkins Script Security Plugin
- CVE-2019-1003029 Jenkins Script Security Plugin Sandbox Bypass
- CVE-2022-43401 Sandbox bypass vulnerabilities in Jenkins Script Security Plugin and in Pipeline: Groovy Plugin
- CVE-2022-43403 Jenkins Script Security Plugin sandbox bypass vulnerability
- CVE-2022-43404 Sandbox bypass vulnerabilities in Jenkins Script Security Plugin and in Pipeline: Groovy Plugin
- CVE-2020-2279 Sandbox bypass vulnerability in Jenkins Script Security Plugin
Sources
Also known as GHSA-cfj9-2vgr-hpxp, MINI-2fw6-9x52-mvc7, MINI-48wx-rj3g-c8xc, MINI-j287-wxhr-wgh2, MINI-j6jj-fm3m-2q3m, MINI-q23x-g3fj-8qfv and 2 more.